Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Door schedule

Graphite on paper

Brown ink on white wove paper

Charcoal on cream laid paper

Black ink and gray wash on off-white wove paper

Charcoal and graphite on blue laid paper

Graphite on blue laid paper

Turpentine wash with oil on off-white wove rag paper

Red, black and brown conté crayon on ivory tracing paper

Colored pencil on cream laid paper

Watercolor on off-white wove paper

Graphite on tan wove paper; verso: graphite on tan wove paper

Graphite on off-white wove paper